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	diff --git a/src/MCStudies/GenericFlux_Vectors.cxx b/src/MCStudies/GenericFlux_Vectors.cxx
	index 6ab61b7..810d261 100644
	--- a/src/MCStudies/GenericFlux_Vectors.cxx
	+++ b/src/MCStudies/GenericFlux_Vectors.cxx
	@@ -1,368 +1,383 @@
	// Copyright 2016 L. Pickering, P Stowell, R. Terri, C. Wilkinson, C. Wret

	/*******************************************************************************
	* This file is part of NUISANCE.
	*
	* NUISANCE is free software: you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	*
	* NUISANCE is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with NUISANCE. If not, see <http://www.gnu.org/licenses/>.
	*******************************************************************************/

	#include "GenericFlux_Vectors.h"

	GenericFlux_Vectors::GenericFlux_Vectors(std::string name,
	std::string inputfile, FitWeight *rw,
	std::string type,
	std::string fakeDataFile) {
	// Measurement Details
	fName = name;
	eventVariables = NULL;

	// Define our energy range for flux calcs
	EnuMin = 0.;
	EnuMax = 1E10; // Arbritrarily high energy limit

	if (Config::HasPar("EnuMin")) {
	EnuMin = Config::GetParD("EnuMin");
	}

	if (Config::HasPar("EnuMax")) {
	EnuMax = Config::GetParD("EnuMax");
	}

	// Set default fitter flags
	fIsDiag = true;
	fIsShape = false;
	fIsRawEvents = false;

	// This function will sort out the input files automatically and parse all the
	// inputs,flags,etc.
	// There may be complex cases where you have to do this by hand, but usually
	// this will do.
	Measurement1D::SetupMeasurement(inputfile, type, rw, fakeDataFile);

	eventVariables = NULL;

	// Setup fDataHist as a placeholder
	this->fDataHist = new TH1D(("empty_data"), ("empty-data"), 1, 0, 1);
	this->SetupDefaultHist();
	fFullCovar = StatUtils::MakeDiagonalCovarMatrix(fDataHist);
	covar = StatUtils::GetInvert(fFullCovar);

	// 1. The generator is organised in SetupMeasurement so it gives the
	// cross-section in "per nucleon" units.
	// So some extra scaling for a specific measurement may be required. For
	// Example to get a "per neutron" measurement on carbon
	// which we do here, we have to multiple by the number of nucleons 12 and
	// divide by the number of neutrons 6.
	// N.B. MeasurementBase::PredictedEventRate includes the 1E-38 factor that is
	// often included here in other classes that directly integrate the event
	// histogram. This method is used here as it now respects EnuMin and EnuMax
	// correctly.
	this->fScaleFactor =
	(this->PredictedEventRate("width", 0, EnuMax) / double(fNEvents)) /
	this->TotalIntegratedFlux("width");

	LOG(SAM) << " Generic Flux Scaling Factor = " << fScaleFactor
	<< " [= " << (GetEventHistogram()->Integral("width") * 1E-38) << "/("
	<< (fNEvents + 0.) << "*" << TotalIntegratedFlux("width") << ")]"
	<< std::endl;

	if (fScaleFactor <= 0.0) {
	ERR(WRN) << "SCALE FACTOR TOO LOW " << std::endl;
	throw;
	}

	// Setup our TTrees
	this->AddEventVariablesToTree();
	this->AddSignalFlagsToTree();
	}

	void GenericFlux_Vectors::AddEventVariablesToTree() {
	// Setup the TTree to save everything
	if (!eventVariables) {
	Config::Get().out->cd();
	eventVariables = new TTree((this->fName + "_VARS").c_str(),
	(this->fName + "_VARS").c_str());
	}

	LOG(SAM) << "Adding Event Variables" << std::endl;

	eventVariables->Branch("Mode", &Mode, "Mode/I");
	eventVariables->Branch("cc", &cc, "cc/B");
	eventVariables->Branch("PDGnu", &PDGnu, "PDGnu/I");
	eventVariables->Branch("Enu_true", &Enu_true, "Enu_true/F");
	eventVariables->Branch("tgt", &tgt, "tgt/I");
	eventVariables->Branch("tgta", &tgta, "tgta/I");
	eventVariables->Branch("tgtz", &tgtz, "tgtz/I");
	eventVariables->Branch("PDGLep", &PDGLep, "PDGLep/I");
	eventVariables->Branch("ELep", &ELep, "ELep/F");
	eventVariables->Branch("CosLep", &CosLep, "CosLep/F");

	// Basic interaction kinematics
	eventVariables->Branch("Q2", &Q2, "Q2/F");
	eventVariables->Branch("q0", &q0, "q0/F");
	eventVariables->Branch("q3", &q3, "q3/F");
	eventVariables->Branch("Enu_QE", &Enu_QE, "Enu_QE/F");
	eventVariables->Branch("Q2_QE", &Q2_QE, "Q2_QE/F");
	eventVariables->Branch("W_nuc_rest", &W_nuc_rest, "W_nuc_rest/F");
	eventVariables->Branch("W", &W, "W/F");
	eventVariables->Branch("W_genie", &W_genie, "W_genie/F");
	eventVariables->Branch("x", &x, "x/F");
	eventVariables->Branch("y", &y, "y/F");
	eventVariables->Branch("Eav", &Eav, "Eav/F");
	eventVariables->Branch("EavAlt", &EavAlt, "EavAlt/F");

	eventVariables->Branch("dalphat", &dalphat, "dalphat/F");
	eventVariables->Branch("dpt", &dpt, "dpt/F");
	eventVariables->Branch("dphit", &dphit, "dphit/F");
	eventVariables->Branch("pnreco_C", &pnreco_C, "pnreco_C/F");

	// Save outgoing particle vectors
	eventVariables->Branch("nfsp", &nfsp, "nfsp/I");
	eventVariables->Branch("px", px, "px[nfsp]/F");
	eventVariables->Branch("py", py, "py[nfsp]/F");
	eventVariables->Branch("pz", pz, "pz[nfsp]/F");
	eventVariables->Branch("E", E, "E[nfsp]/F");
	eventVariables->Branch("pdg", pdg, "pdg[nfsp]/I");
	+ eventVariables->Branch("pdg_rank", pdg_rank, "pdg_rank[nfsp]/I");

	// Event Scaling Information
	eventVariables->Branch("Weight", &Weight, "Weight/F");
	eventVariables->Branch("InputWeight", &InputWeight, "InputWeight/F");
	eventVariables->Branch("RWWeight", &RWWeight, "RWWeight/F");
	// Should be a double because may be 1E-39 and less
	eventVariables->Branch("fScaleFactor", &fScaleFactor, "fScaleFactor/D");

	// The customs
	eventVariables->Branch("CustomWeight", &CustomWeight, "CustomWeight/F");
	eventVariables->Branch("CustomWeightArray", CustomWeightArray, "CustomWeightArray[6]/F");

	return;
	}

	void GenericFlux_Vectors::FillEventVariables(FitEvent *event) {

	ResetVariables();

	// Fill Signal Variables
	FillSignalFlags(event);
	LOG(DEB) << "Filling signal" << std::endl;

	// Now fill the information
	Mode = event->Mode;
	cc = (abs(event->Mode) < 30);

	// Get the incoming neutrino and outgoing lepton
	FitParticle *nu = event->GetNeutrinoIn();
	FitParticle *lep = event->GetHMFSAnyLepton();

	PDGnu = nu->fPID;
	Enu_true = nu->fP.E() / 1E3;
	tgt = event->fTargetPDG;
	tgta = event->fTargetA;
	tgtz = event->fTargetZ;

	if (lep != NULL) {
	PDGLep = lep->fPID;
	ELep = lep->fP.E() / 1E3;
	CosLep = cos(nu->fP.Vect().Angle(lep->fP.Vect()));

	// Basic interaction kinematics
	Q2 = -1 * (nu->fP - lep->fP).Mag2() / 1E6;
	q0 = (nu->fP - lep->fP).E() / 1E3;
	q3 = (nu->fP - lep->fP).Vect().Mag() / 1E3;

	// These assume C12 binding from MINERvA... not ideal
	Enu_QE = FitUtils::EnuQErec(lep->fP, CosLep, 34., true);
	Q2_QE = FitUtils::Q2QErec(lep->fP, CosLep, 34., true);

	Eav = FitUtils::GetErecoil_MINERvA_LowRecoil(event)/1.E3;
	EavAlt = FitUtils::Eavailable(event)/1.E3;

	// Get W_true with assumption of initial state nucleon at rest
	float m_n = (float)PhysConst::mass_proton;
	// Q2 assuming nucleon at rest
	W_nuc_rest = sqrt(-Q2 + 2 * m_n * q0 + m_n * m_n);
	// True Q2
	W = sqrt(-Q2 + 2 * m_n * q0 + m_n * m_n);
	x = Q2 / (2 * m_n * q0);
	y = 1 - ELep / Enu_true;

	dalphat = FitUtils::Get_STV_dalphat(event, PDGnu, true);
	dpt = FitUtils::Get_STV_dpt(event, PDGnu, true);
	dphit = FitUtils::Get_STV_dphit(event, PDGnu, true);
	pnreco_C = FitUtils::Get_pn_reco_C(event, PDGnu, true);
	}

	// Loop over the particles and store all the final state particles in a vector
	for (UInt_t i = 0; i < event->Npart(); ++i) {

	bool part_alive = event->PartInfo(i)->fIsAlive &&
	event->PartInfo(i)->Status() == kFinalState;
	if (!part_alive) continue;

	partList.push_back(event->PartInfo(i));
	}

	// Save outgoing particle vectors
	nfsp = (int)partList.size();
	+ std::map<int, std::vector<std::pair<double, int> > > pdgMap;

	for (int i = 0; i < nfsp; ++i) {
	px[i] = partList[i]->fP.X() / 1E3;
	py[i] = partList[i]->fP.Y() / 1E3;
	pz[i] = partList[i]->fP.Z() / 1E3;
	E[i] = partList[i]->fP.E() / 1E3;
	pdg[i] = partList[i]->fPID;
	+ pdgMap[pdg[i]].push_back(std::make_pair(partList[i]->fP.Vect().Mag(), i));
	+ }
	+
	+ for(std::map<int, std::vector<std::pair<double, int> > >::iterator iter = pdgMap.begin();
	+ iter != pdgMap.end(); ++iter){
	+ std::vector<std::pair<double, int> > thisVect = iter->second;
	+ std::sort(thisVect.begin(), thisVect.end());
	+
	+ // Now save the order... a bit funky to avoid inverting
	+ int nPart = (int)thisVect.size()-1;
	+ for (int i=nPart; i >= 0; --i) {
	+ pdg_rank[thisVect[i].second] = nPart-i;
	+ }
	}

	#ifdef __GENIE_ENABLED__
	if (event->fType == kGENIE) {
	EventRecord * gevent = static_cast<EventRecord*>(event->genie_event->event);
	const Interaction * interaction = gevent->Summary();
	const Kinematics & kine = interaction->Kine();
	double W_genie = kine.W();
	}
	#endif

	// Fill event weights
	Weight = event->RWWeight * event->InputWeight;
	RWWeight = event->RWWeight;
	InputWeight = event->InputWeight;
	// And the Customs
	CustomWeight = event->CustomWeight;
	for (int i = 0; i < 6; ++i) {
	CustomWeightArray[i] = event->CustomWeightArray[i];
	}

	// Fill the eventVariables Tree
	eventVariables->Fill();
	return;
	};

	//********************************************************************
	void GenericFlux_Vectors::ResetVariables() {
	//********************************************************************

	cc = false;

	// Reset all Function used to extract any variables of interest to the event
	Mode = PDGnu = tgt = tgta = tgtz = PDGLep = 0;

	Enu_true = ELep = CosLep = Q2 = q0 = q3 = Enu_QE = Q2_QE = W_nuc_rest = W = x = y = Eav = EavAlt = -999.9;

	W_genie = -999;
	// Other fun variables
	// MINERvA-like ones
	dalphat = dpt = dphit = pnreco_C = -999.99;

	nfsp = 0;
	for (int i = 0; i < kMAX; ++i){
	px[i] = py[i] = pz[i] = E[i] = -999;
	- pdg[i] = 0;
	+ pdg[i] = pdg_rank[i] = 0;
	}

	Weight = InputWeight = RWWeight = 0.0;

	CustomWeight = 0.0;
	for (int i = 0; i < 6; ++i) CustomWeightArray[i] = 0.0;

	partList.clear();

	flagCCINC = flagNCINC = flagCCQE = flagCC0pi = flagCCQELike = flagNCEL = flagNC0pi = flagCCcoh = flagNCcoh = flagCC1pip = flagNC1pip = flagCC1pim = flagNC1pim = flagCC1pi0 = flagNC1pi0 = false;
	}

	//********************************************************************
	void GenericFlux_Vectors::FillSignalFlags(FitEvent *event) {
	//********************************************************************

	// Some example flags are given from SignalDef.
	// See src/Utils/SignalDef.cxx for more.
	int nuPDG = event->PartInfo(0)->fPID;

	// Generic signal flags
	flagCCINC = SignalDef::isCCINC(event, nuPDG);
	flagNCINC = SignalDef::isNCINC(event, nuPDG);
	flagCCQE = SignalDef::isCCQE(event, nuPDG);
	flagCCQELike = SignalDef::isCCQELike(event, nuPDG);
	flagCC0pi = SignalDef::isCC0pi(event, nuPDG);
	flagNCEL = SignalDef::isNCEL(event, nuPDG);
	flagNC0pi = SignalDef::isNC0pi(event, nuPDG);
	flagCCcoh = SignalDef::isCCCOH(event, nuPDG, 211);
	flagNCcoh = SignalDef::isNCCOH(event, nuPDG, 111);
	flagCC1pip = SignalDef::isCC1pi(event, nuPDG, 211);
	flagNC1pip = SignalDef::isNC1pi(event, nuPDG, 211);
	flagCC1pim = SignalDef::isCC1pi(event, nuPDG, -211);
	flagNC1pim = SignalDef::isNC1pi(event, nuPDG, -211);
	flagCC1pi0 = SignalDef::isCC1pi(event, nuPDG, 111);
	flagNC1pi0 = SignalDef::isNC1pi(event, nuPDG, 111);
	}

	void GenericFlux_Vectors::AddSignalFlagsToTree() {
	if (!eventVariables) {
	Config::Get().out->cd();
	eventVariables = new TTree((this->fName + "_VARS").c_str(),
	(this->fName + "_VARS").c_str());
	}

	LOG(SAM) << "Adding signal flags" << std::endl;

	// Signal Definitions from SignalDef.cxx
	eventVariables->Branch("flagCCINC", &flagCCINC, "flagCCINC/O");
	eventVariables->Branch("flagNCINC", &flagNCINC, "flagNCINC/O");
	eventVariables->Branch("flagCCQE", &flagCCQE, "flagCCQE/O");
	eventVariables->Branch("flagCC0pi", &flagCC0pi, "flagCC0pi/O");
	eventVariables->Branch("flagCCQELike", &flagCCQELike, "flagCCQELike/O");
	eventVariables->Branch("flagNCEL", &flagNCEL, "flagNCEL/O");
	eventVariables->Branch("flagNC0pi", &flagNC0pi, "flagNC0pi/O");
	eventVariables->Branch("flagCCcoh", &flagCCcoh, "flagCCcoh/O");
	eventVariables->Branch("flagNCcoh", &flagNCcoh, "flagNCcoh/O");
	eventVariables->Branch("flagCC1pip", &flagCC1pip, "flagCC1pip/O");
	eventVariables->Branch("flagNC1pip", &flagNC1pip, "flagNC1pip/O");
	eventVariables->Branch("flagCC1pim", &flagCC1pim, "flagCC1pim/O");
	eventVariables->Branch("flagNC1pim", &flagNC1pim, "flagNC1pim/O");
	eventVariables->Branch("flagCC1pi0", &flagCC1pi0, "flagCC1pi0/O");
	eventVariables->Branch("flagNC1pi0", &flagNC1pi0, "flagNC1pi0/O");
	};

	void GenericFlux_Vectors::Write(std::string drawOpt) {

	// First save the TTree
	eventVariables->Write();

	// Save Flux and Event Histograms too
	GetInput()->GetFluxHistogram()->Write();
	GetInput()->GetEventHistogram()->Write();

	return;
	}

	// Override functions which aren't really necessary
	bool GenericFlux_Vectors::isSignal(FitEvent *event) {
	(void)event;
	return true;
	};

	void GenericFlux_Vectors::ScaleEvents() { return; }

	void GenericFlux_Vectors::ApplyNormScale(float norm) {
	this->fCurrentNorm = norm;
	return;
	}

	void GenericFlux_Vectors::FillHistograms() { return; }

	void GenericFlux_Vectors::ResetAll() {
	eventVariables->Reset();
	return;
	}

	float GenericFlux_Vectors::GetChi2() { return 0.0; }
	diff --git a/src/MCStudies/GenericFlux_Vectors.h b/src/MCStudies/GenericFlux_Vectors.h
	index 181a283..9c9a9b7 100644
	--- a/src/MCStudies/GenericFlux_Vectors.h
	+++ b/src/MCStudies/GenericFlux_Vectors.h
	@@ -1,135 +1,136 @@
	// Copyright 2016 L. Pickering, P Stowell, R. Terri, C. Wilkinson, C. Wret

	/*******************************************************************************
	* This file is part of NUISANCE.
	*
	* NUISANCE is free software: you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	*
	* NUISANCE is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with NUISANCE. If not, see <http://www.gnu.org/licenses/>.
	*******************************************************************************/

	#ifndef GenericFlux_Vectors_H_SEEN
	#define GenericFlux_Vectors_H_SEEN
	#include "Measurement1D.h"
	#include "FitEvent.h"

	class GenericFlux_Vectors : public Measurement1D {

	public:

	GenericFlux_Vectors(std::string name, std::string inputfile, FitWeight *rw, std::string type, std::string fakeDataFile);
	virtual ~GenericFlux_Vectors() {};

	//! Grab info from event
	void FillEventVariables(FitEvent *event);

	//! Fill signal flags
	void FillSignalFlags(FitEvent *event);

	void ResetVariables();

	//! Fill Custom Histograms
	void FillHistograms();

	//! ResetAll
	void ResetAll();

	//! Scale
	void ScaleEvents();

	//! Norm
	void ApplyNormScale(float norm);

	//! Define this samples signal
	bool isSignal(FitEvent *nvect);

	//! Write Files
	void Write(std::string drawOpt);

	//! Get Chi2
	float GetChi2();

	void AddEventVariablesToTree();
	void AddSignalFlagsToTree();

	private:

	TTree* eventVariables;
	std::vector<FitParticle*> partList;

	int Mode;
	bool cc;
	int PDGnu;
	int tgt;
	int tgta;
	int tgtz;
	int PDGLep;
	float ELep;
	float CosLep;

	// Basic interaction kinematics
	float Q2;
	float q0;
	float q3;
	float Enu_QE;
	float Enu_true;
	float Q2_QE;
	float W_nuc_rest;
	float W;
	float x;
	float y;
	float Eav;
	float EavAlt;
	float dalphat;
	float W_genie;
	float dpt;
	float dphit;
	float pnreco_C;

	// Save outgoing particle vectors
	int nfsp;
	static const int kMAX = 200;
	float px[kMAX];
	float py[kMAX];
	float pz[kMAX];
	float E[kMAX];
	int pdg[kMAX];
	+ int pdg_rank[kMAX];

	// Basic event info
	float Weight;
	float InputWeight;
	float RWWeight;
	double fScaleFactor;

	// Custom weights
	float CustomWeight;
	float CustomWeightArray[6];

	// Generic signal flags
	bool flagCCINC;
	bool flagNCINC;
	bool flagCCQE;
	bool flagCC0pi;
	bool flagCCQELike;
	bool flagNCEL;
	bool flagNC0pi;
	bool flagCCcoh;
	bool flagNCcoh;
	bool flagCC1pip;
	bool flagNC1pip;
	bool flagCC1pim;
	bool flagNC1pim;
	bool flagCC1pi0;
	bool flagNC1pi0;
	};

	#endif

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